Tire for vehicles.



PATENTED APR. 9, 19071 W. DUNBAR. TIRE FOR VEHICLES.

AYPLIOATIOH FILED APB.22,1905.

FIGJ.

INVENT Jada? WITNESSES:

QLQ 3 preferably made of brass, may

WILMER DUNBAR,

TIRE FOR Specification of Letters Patent.

PATENT OFFICE.

OF AKRON, OHIO.

VEHICLES.

Patented April 9, 1907.

Application filed April 22, 1905- Scrial No. 266,911.

To all whom it may concern.-

Be it known that I, WILMER DUNBAR, residing at Akron, in the county ofSummit and State of Ohio, a citizen of the United States,

have invented or discovered certain new and useful Improvements in Tiresfor Vehicles, of which improvements the following is a specification.

The invention described herein relates to certain improvements in tiresfor automobiles, &c., and has for its object the provision of suitablemeans whereby the slipping of the wheelis prevented.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a 5 part of this specification,Figure 1 is a plan view of a portion of a tire having my improvementapplied thereto. Figs. 2 and 3 1 are sectional iews on planes indicated,re- 1 'spectively, by the lines 11 II and III III,

1, within which is placed the inflating-tube,

may be of any suitable construction and applied in any suitable ordesired manner to the felly of the wheel. On this sheath is secured by asuitable cement a tread or wearing piece 3. Prior to placing thewearingpiece in position holes or openings are formed therein for thereception of the ferrules 4,

provided at their inner ends with heads or l enlargements 5, so as toprevent the drawing l -of the ferrules from position in the wearing- Ipieces. If desired, these ferrules, which are i be secured byvulcanization within the openings in the wearing-piece. These ferrulesare filled with l plugs 6, which may be of any desired compositione.g.', thematerial from which the wearing-piece is made or a mixture ofrubi her, ground cork, and ground fiber. This 3 latter com osition willmake a harder and I more dura 'le substance than the wearingpiece. andwill in consequence thereof prol the practice of my invention the sheathbe forced inward into the tubes, and thereby form what would bepractically suctionockets, which would tend tohold the tire fromslipping. The ed es of the ferrules be- I ing formed of metal will wearaway less rapid y and in use will protrude beyond the surroundingmaterials and form an additional biting edge. 1 The ferrules are: formedof a material l harder than that in the tread portion, and 1 hence willnot wear away as rapidly, and it should be characteristic of thematerial formingthe ferrules that the plugs will firmlyadhere thereto.As the material of the plugs and the tread portions will adhere verytightly on vulcanization to brass, the ferrules are preferably formed ofsuch material. 1 claim herein as my inventionl 1. A tire for wheelsformed of a yielding material and provided with pockets or recesses andplugs formed of a less yielding but resilient material secured in saidpockets or l recesses, the outer ends-of the plugs formmg with thesurface of the tire a uniform and regular surface.

2. A tread portion oftires in combination 4 with metal ferrules securedtherein and a lug or filling in the ferrules, the wearing-surfaces ofthe tire, ferrules and plugs being normally in or approximately in thesame plane. 3. A tread portion for tires in combination with metalferrules provided with retainingheads and secured in the tread portionand a plug or filling in the ferrules.

In testimony whereof I have hereunto set my hand.

WILMER DUNBAR.

Witnesses:

- CHARLES BARNE'rr, FRANCIS VERNAU.

